CN211920318U - Feeding device and film cutting machine - Google Patents

Abstract

The utility model belongs to the technical field of material roll feeding, in particular to a feeding device and a film cutting machine. It includes a driving roller, a driven roller and a driving component. The driving roller and the driven roller are opposite to each other and clamp the material belt together. The driving component includes a worm gear connected with the driving roller, a worm matched with the worm gear, a driving motor for driving the worm, and The encoder is electrically connected to the driving motor and is arranged on the driving roller and can acquire the rotation information of the driving roller. Based on the encoder, the output of the material belt can be accurately obtained, and based on the matching structure of the worm gear and the worm, the driving roller can stop rotating immediately when it stops working, which prevents the driving roller from continuing to rotate under the action of inertia, so it can accurately control The discharge volume of the material belt improves the feeding reliability of the feeding device.

Description

Feeding device and film cutting machine

technical field

The utility model belongs to the technical field of material roll feeding, in particular to a feeding device and a film cutting machine.

Background technique

The die-cutting process in the production process of lithium batteries is the process that the feeding device unwinds the material roll to supply the material belt. When the material belt reaches the required amount, the material belt is cut off. In the process of supplying the material belt, the feeding device actively rotates the material coil, and the material belt can be gradually released from the material coil with the rotation of the material coil, and the diameter of the material coil during the rotating and unloading process keeps decreasing. It is necessary to continuously calculate the real-time diameter of the reel for adjustment according to the speed of the unwinding, but the consistency of the reel cannot be guaranteed. The change of the winding tension of the coil will affect the circumference of the coil, which in turn affects the accuracy of the circumference calculated according to the diameter, resulting in the method of calculating the real-time diameter of the coil to control the unwinding speed. The problem.

Utility model content

The present invention aims to solve at least one of the problems existing in the prior art or the related art.

One of the utility models is to provide a feeding device, which aims to solve the problem of low reliability and low reliability in the method of calculating the real-time diameter of the material roll to control the unwinding speed.

The utility model is realized in this way:

A feeding device includes a reel shaft and a feeding mechanism, the reel shaft is sleeved and matched with the material roll, and the feeding mechanism includes a driving roller, a driven roller and a driving component, and the driving roller and the driven roller are oppositely arranged and clamped together A material holding belt, the driving component includes a worm gear connected with the driving roller, a worm matched with the worm gear, a driving motor for driving the worm, and an encoder electrically connected to the driving motor and arranged on the driving roller and capable of acquiring the rotation information of the driving roller.

By adopting the above technical solution, during use, when the driving roller and the driven roller jointly clamp the material belt, there is static friction between the driving roller and the material belt. At this time, the driving motor starts to work, the driving motor rotates the worm, and drives the The worm wheel rotates, and then the worm wheel drives the driving roller to rotate. Relying on the static friction between the driving roller and the material belt, when the driving roller rotates, the driving roller drives the material belt to discharge. Among them, because the encoder can obtain the rotation information of the driving roller, this way , the discharge amount of the material belt can be accurately obtained. When the material belt reaches the preset material discharge amount, the drive motor stops working. Based on the matching structure of the worm wheel and the worm, the worm wheel and the worm have a self-locking effect, and the driving roller can When it stops working, it also stops rotating immediately, which prevents the driving roller from continuing to rotate under the action of inertia, so that the discharge amount of the material belt can be accurately controlled, and the feeding reliability of the feeding device is improved.

In one embodiment, the feeding device further includes a buffer mechanism, and the buffer mechanism tensions the material belt between the material roll and the feeding mechanism.

By adopting the above technical solution, the buffer mechanism tensions the material belt, which can straighten the material belt between the buffer mechanism and the feeding mechanism, so as to ensure that the material belt can enter the feeding mechanism directly and smoothly, and avoid the pressing and folding of the feeding mechanism. Strip.

In one embodiment, the buffer mechanism includes a tension roller and an elastic structure, and the elastic structure drives the tension roller to press against the material belt through an elastic restoring force.

By adopting the above technical solution, firstly, when the rotation speed of the material roll fails to keep up with the discharge speed of the feeding mechanism in a short period of time, the elastic structure can provide a certain buffer, so as to avoid pulling and breaking the material belts. When the discharge speed of the feeding mechanism is too slow, the elastic structure tensions the material belt, which can straighten the material belt between the buffer mechanism and the feeding mechanism, so as to ensure that the material belt can enter the feeding mechanism directly and smoothly, avoiding The feeding mechanism folds the tape.

In one embodiment, the elastic structure includes a sliding rail bracket, a sliding block, and an elastic member, the sliding block is slidably connected to the sliding rail bracket, and is also connected to the tension roller, and the elastic member is connected to the sliding rail bracket, and through its elastic restoring force Drive the sliding block to drive the tension roller to press against the material belt.

In one embodiment, two elastic structures are provided, and are respectively connected to both ends of the tension roller.

In one embodiment, the sliding rail bracket defines a sliding slot, and the sliding block and the elastic member are both located in the sliding slot, and are slidably connected to the sliding slot.

In one embodiment, the buffer mechanism further comprises an over-roller, and at least one over-roller is provided between the material roll and the tensioning roller and/or between the material roll and the feeding mechanism , the passing roller and the tensioning roller are respectively located on both sides of the material belt.

By adopting the above technical solution, it is convenient to adjust the path of the material strip 501 .

In one embodiment, the feeding device further includes an elastic pressing member, and the elastic pressing member drives the driven roller to press the material belt to the driving roller through its elastic restoring force.

By adopting the above technical solution, during use, a certain external force is applied to the driven roller to overcome the elastic restoring force of the elastic pressing member, and the driven roller is pulled away from the driving roller, so that there is a gap between the driven roller and the driving roller. In this gap, the staff can place the material belt between the driving roller and the driven roller, and can also take out the material belt from between the driving roller and the driven roller.

In one embodiment, the reel shaft is an air shaft.

Another object of the present invention is to provide a film cutting machine, which includes the above-mentioned feeding device.

By adopting the above technical solution, during use, when the driving roller and the driven roller jointly clamp the material belt, there is static friction between the driving roller and the material belt. At this time, the driving motor starts to work, the driving motor rotates the worm, and drives the The worm wheel rotates, and then the worm wheel drives the driving roller to rotate. Relying on the static friction between the driving roller and the material belt, when the driving roller rotates, the driving roller drives the material belt to discharge. Among them, because the encoder can obtain the rotation information of the driving roller, this way , the discharge amount of the material belt can be accurately obtained. When the material belt reaches the preset material discharge amount, the drive motor stops working. Based on the matching structure of the worm wheel and the worm, the worm wheel and the worm have a self-locking effect, and the driving roller can When it stops working, it also stops rotating immediately, which prevents the driving roller from continuing to rotate under the action of inertia, so that the discharge amount of the material belt can be accurately controlled, and the feeding reliability of the feeding device is improved.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. , for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic three-dimensional structure diagram of a feeding device provided by an embodiment of the present invention.

Description of reference numbers:

100-reel shaft; 200-feeding mechanism; 210-drive roller; 220-driven roller; 230-drive assembly; 231-worm gear; 232-worm; 233-drive motor; 300-buffer mechanism; 310-tension Roller; 320- elastic structure; 321- slide rail bracket; 322- sliding block; 323- elastic piece; 330- over roller; 400- elastic pressing piece; 500- material roll;

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

Referring to FIG. 1 , an embodiment of the present invention provides a feeding device for making the material roll 500 unload the material belt 501 .

It should be noted here that the material roll 500 is formed by winding a material tape 501, and the material tape 501 may be a pole piece or other film material.

Referring to FIG. 1 , the feeding device includes a reel 100 and a feeding mechanism 200 .

In a specific implementation, the feeding device may further include a base plate 600 for fixing various components, that is, the reel 100 and the feeding mechanism 200 are both fixed on a base plate 600, so that the feeding device can be used as a whole. And mobile installation, disassembly.

The reel 100 is sleeved and matched with the reel 500 , and one end of the reel 100 is fixed on the base plate 600 .

It should be noted here that the socket connection means that the reel 100 is inserted into the reel hole of the reel 500 .

During the discharging process of the material roll 500 , since the material roll 500 needs to be rotated to pull the material tape 501 out of the material roll 500 , if the material reel 100 is fixed, there is a gap between the material roll 100 and the material roll 500 . The connection is not fixed, and the rotational friction between the reel shaft 100 and the reel 500 is sufficient to ensure that the strip 501 will not be torn off during the process of pulling the reel 501 out of the reel 500. In this way, a purely mechanical structure can be used to achieve , it does not need electric control devices to realize, which is beneficial to reduce the problem of high failure caused by too many electric control devices. The shaft diameter can be changed according to the amount of the material, so as to adjust the tightness between the reel 100 and the reel 500, so that the rotational friction force between the reel 100 and the reel 500 can be easily adjusted to meet the requirements of removing the reel 501 from the The coil 500 will not be torn off during the pulling process; and if the reel 100 is rotatable, the connection between the reel 100 and the reel 500 can be fixed, and the rotation of the reel 100 can be determined according to the encoder, And the thickness of the roll 500 is comprehensively obtained, whichever increases the appropriate margin shall prevail.

The feeding mechanism 200 includes a driving roller 210, a driven roller 220 and a driving assembly 230. The driving roller 210 and the driven roller 220 are arranged opposite to each other and clamp the material belt 501 together. The driving assembly 230 includes a worm gear 231 connected with the driving roller 210, The worm 232 matched with the worm wheel 231 , the drive motor 233 for driving the worm 232 , and the encoder electrically connected to the drive motor 233 and provided on the driving roller 210 and capable of acquiring rotation information of the driving roller 210 are provided.

It should be noted here that both the driving roller 210 and the driven roller 220 can be directly connected to the base plate 600 or connected to the base plate 600 through an intermediate structure. Specifically, in the embodiment of the present invention, the driving roller 210 The worm gear 231 is connected to the substrate 600, and the driving roller 210 is coaxially arranged with the worm gear 231, while the driven roller 220 is connected to the substrate 600 through the elastic pressing member 400, and the elastic pressing member 400 drives the follower through its elastic restoring force The roller 220 presses the material belt 501 to the driving roller 210 ; in the embodiment of the present invention, the driving motor 233 and the worm gear 231 are fixed on the base plate 600 , and the worm 232 is fixedly connected to the output shaft of the driving motor 233 .

It should also be noted here that the driving roller 210 and the driven roller 220 may both be rubber rollers, so that when the driving roller 210 and the driven roller 220 jointly clamp the material belt 501, the damage caused by the driving roller 210 and the driven roller 220 can be effectively reduced. The case where the driven rollers 220 are pressed against each other and the material belt 501 is damaged.

During use, when the driving roller 210 and the driven roller 220 jointly clamp the material belt 501, there is static friction between the driving roller 210 and the material belt 501. At this time, the driving motor 233 starts to work, and the driving motor 233 rotates the worm 232. And drive the worm wheel 231 to rotate, and then the worm wheel 231 drives the driving roller 210 to rotate, relying on the static friction between the driving roller 210 and the material belt 501, when the driving roller 210 rotates, the driving roller 210 drives the material belt 501 to discharge. The encoder can obtain the rotation information of the driving roller 210, so that the discharge amount of the material belt 501 can be accurately obtained. When the material belt 501 reaches the preset material discharge amount, the drive motor 233 stops working. Based on the cooperation of the worm wheel 231 and the worm 232 Structure, there is a self-locking effect between the worm wheel 231 and the worm 232, and the driving roller 210 can stop rotating immediately when it stops working, which prevents the driving roller 210 from continuing to rotate under the action of inertia, so that the discharge of the material belt 501 can be accurately controlled. It can improve the feeding reliability of the feeding device.

It should be noted here that when the driving roller 210 and the driven roller 220 jointly clamp the material belt 501, there is also static friction between the driven roller 220 and the material belt 501. During the discharging process of the material belt 501, the driven roller The static friction between 220 and the material belt 501 will drive the driven roller 220 to rotate, thereby preventing the driven roller 220 from hindering the material belt 501 from discharging.

In the embodiment of the present invention, the driving motor 233 is a stepping motor, and the stepping motor has the characteristics of high controllability, which can improve the feeding reliability of the feeding device.

Of course, it should be noted here that the specific control of the driving motor 233 is usually performed by PLC, and those skilled in the art will know how to realize it after reading the above content, so the details are not repeated here.

Referring to FIG. 1 , in the embodiment of the present invention, the feeding device further includes a buffer mechanism 300 , and the buffer mechanism 300 tensions the material belt 501 between the material roll 500 and the feeding mechanism 200 .

The buffer mechanism 300 tensions the material belt 501, which can straighten the material belt 501 located between the buffer mechanism 300 and the feeding mechanism 200, so as to ensure that the material belt 501 can enter the feeding mechanism 200 straightly and avoid the feeding mechanism 200. Crimp strip 501.

In the embodiment of the present invention, the buffer mechanism 300 is fixed on the base plate 600 , the positional relationship among the buffer mechanism 300 , the reel 100 and the feeding mechanism 200 is a triangle, and the reel 100 is set by the buffer mechanism. Below the feeding mechanism 200, the space occupied by the reel 100 in the horizontal direction can be saved.

Referring to FIG. 1 , in the embodiment of the present invention, the buffer mechanism 300 includes a tension roller 310 and an elastic structure 320 , and the elastic structure 320 drives the tension roller 310 to press against the material belt 501 through elastic restoring force.

It should be noted here that the tension roller 310 is connected to the base plate 600 through the elastic structure 320 .

Based on this structure, first, when the rotation speed of the material roll 500 fails to keep up with the discharge speed of the feeding mechanism 200 in a short period of time, the elastic structure 320 can provide a certain buffer, so as to avoid pulling between the material belts 501. When the discharging speed of the feeding mechanism 200 is too slow, the elastic structure 320 tensions the material belt 501, which can straighten the material belt 501 between the buffer mechanism 300 and the feeding mechanism 200, thereby ensuring the material belt 501 It can enter the feeding mechanism 200 directly and smoothly, so as to avoid the feeding mechanism 200 from buckling the material belt 501 .

Referring to FIG. 1 , in the embodiment of the present invention, the elastic structure 320 includes a sliding rail bracket 321 , a sliding block 322 and an elastic member 323 . The sliding block 322 is slidably connected to the sliding rail bracket 321 and is also connected to one end of the tension roller 310 , the elastic member 323 is connected to the slide rail bracket 321 , and drives the sliding block 322 through its elastic restoring force to drive the tension roller 310 to press the material belt 501 . The structure has a simple structure, is convenient for production and manufacture, and reduces the production and manufacture cost.

In the embodiment of the present invention, the slide rail bracket 321 may be integrally connected to the base plate 600, or may be connected to the base plate 600 through an intermediate structural member.

Further, two elastic structures 320 are provided, and are respectively connected to both ends of the tension roller 310 , which is beneficial to balance the force on both sides of the tension roller 310 , prevent the tension roller 310 from tilting, and improve the stability of the buffer mechanism 300 sex.

Among them, one slide rail bracket 321 is integrally connected to the base plate 600 , and the other is connected to the base plate 600 through an intermediate structure.

Further, the sliding rail bracket 321 defines a sliding slot, and the sliding block 322 and the elastic member 323 are both located in the sliding slot, and are slidably connected to the sliding slot.

It should be noted here that, in the embodiment of the present invention, the elastic member 323 is a compression spring. Of course, in other embodiments, the elastic member 323 can also be a rubber band or the like.

Using the sliding connection between the sliding block 322 and the chute, the sliding block 322 can only move along the extending direction of the sliding groove, which limits the sliding path of the sliding block 322 and prevents the sliding block 322 from slanting to other places, which is conducive to improving the The stability of the buffer mechanism 300 .

Referring to FIG. 1 , in the embodiment of the present invention, the buffer mechanism 300 further includes a pass roller 330 , and at least one pass roller is provided between the material roll 500 and the tensioning roller 310 and between the material roll 500 and the feeding mechanism 200 330 , the over-roller 330 and the tension roller 310 are respectively located on both sides of the material belt 501 , and the over-roller 330 can be used to adjust the path of the material belt 501 .

Specifically, there are two passing rollers 330, one of which is located between the buffer mechanism 300 and the feeding mechanism 200 to adjust the entry of the material belt 501 into the feeding mechanism 200, and the other passing roller 330 is located in the buffer mechanism 300 and the reel shaft 100 to adjust the angle at which the material tape 501 enters the buffer mechanism 300 .

It should be noted here that in the embodiment of the present invention, the central axes of the driving roller 210 , the driven roller 220 , the tensioning roller 310 , and the passing roller 330 are arranged parallel to each other.

Referring to FIG. 1 , in the embodiment of the present invention, the feeding device further includes an elastic pressing member 400 , and the elastic pressing member 400 drives the driven roller 220 through its elastic restoring force to press the material belt 501 to the driving roller 210 .

Based on this structural design, the material belt 501 can be easily placed between the driving roller 210 and the driven roller 220 , and the material belt 501 can be easily taken out from between the driving roller 210 and the driven roller 220 .

During use, a certain external force is applied to the driven roller 220 to overcome the elastic restoring force of the elastic pressing member 400, and the driven roller 220 is pulled away from the driving roller 210, so that there is a gap between the driven roller 220 and the driving roller 210. In this gap, the worker can place the material belt 501 between the driving roller 210 and the driven roller 220 , and can also take out the material belt 501 from between the driving roller 210 and the driven roller 220 .

Specifically, in the embodiment of the present invention, the elastic pressing member 400 is a torsion spring structure.

Embodiment 2

The utility model also provides a film cutting machine, which includes a feeding device, and the specific structure of the feeding device refers to the above-mentioned embodiments.

During use, when the driving roller 210 and the driven roller 220 jointly clamp the material belt 501, there is static friction between the driving roller 210 and the material belt 501. At this time, the driving motor 233 starts to work, and the driving motor 233 rotates the worm 232. And drive the worm wheel 231 to rotate, and then the worm wheel 231 drives the driving roller 210 to rotate, relying on the static friction between the driving roller 210 and the material belt 501, when the driving roller 210 rotates, the driving roller 210 drives the material belt 501 to discharge. The encoder can obtain the rotation information of the driving roller 210, so that the discharge amount of the material belt 501 can be accurately obtained. When the material belt 501 reaches the preset material discharge amount, the drive motor 233 stops working. Based on the cooperation of the worm wheel 231 and the worm 232 Structure, there is a self-locking effect between the worm wheel 231 and the worm 232, and the driving roller 210 can stop rotating immediately when it stops working, which prevents the driving roller 210 from continuing to rotate under the action of inertia, so that the discharge of the material belt 501 can be accurately controlled. It improves the slicing accuracy and reliability of the film cutting machine.

It should be noted here that when the driving roller 210 and the driven roller 220 jointly clamp the material belt 501, there is also static friction between the driven roller 220 and the material belt 501. During the discharging process of the material belt 501, the driven roller The static friction between 220 and the material belt 501 will drive the driven roller 220 to rotate, thereby preventing the driven roller 220 from hindering the material belt 501 from discharging.

The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present utility model shall be included in the present utility model. within the scope of protection.

Claims (10)

1. A feeding device for making a material roll unload a material belt, characterized in that it comprises a reel shaft and a feeding mechanism, the reeling shaft is sleeved and fitted with the material roll, and the feeding mechanism includes A driving roller, a driven roller and a driving assembly, the driving roller and the driven roller are arranged opposite to each other and clamp the material strip together, and the driving assembly includes a worm gear connected with the driving roller and matched with the worm gear A worm, a drive motor for driving the worm, and an encoder electrically connected to the drive motor and arranged on the drive roller and capable of acquiring rotation information of the drive roller. 2 . The feeding device according to claim 1 , wherein the feeding device further comprises a buffer mechanism, and the buffer mechanism tensions the material belt between the material roll and the feeding mechanism. 3 . . 3 . The feeding device according to claim 2 , wherein the buffer mechanism comprises a tension roller and an elastic structure, and the elastic structure drives the tension roller to press against the material belt through an elastic restoring force. 4 . 4 . The feeding device according to claim 3 , wherein the elastic structure comprises a sliding rail bracket, a sliding block and an elastic member, and the sliding block is slidably connected to the sliding rail bracket and is also connected to the sliding rail bracket. 5 . The tensioning roller is connected, and the elastic piece is connected to the sliding rail bracket, and drives the sliding block through its elastic restoring force to drive the tensioning roller to press against the material belt. 5 . The feeding device according to claim 4 , wherein two elastic structures are provided, and are respectively connected to both ends of the tension roller. 6 . 6 . The feeding device according to claim 4 , wherein the slide rail bracket is provided with a chute, the sliding block and the elastic member are both located in the chute, and the slide is slidably connected to the the chute. 7. The feeding device according to claim 3, characterized in that, the buffer mechanism further comprises a pass roller, between the material roll and the tension roll and/or between the material roll and the At least one of the over-rollers is arranged between the feeding mechanisms, and the over-roller and the tension roller are respectively located on both sides of the material belt. 8. The feeding device according to any one of claims 1 to 7, characterized in that, the feeding device further comprises an elastic pressing member, and the elastic pressing member drives the slave through its elastic restoring force. The driving roller presses the material belt to the driving roller. 9. The feeding device according to any one of claims 1 to 7, wherein the reeling shaft is an air-expanding shaft. 10. A film cutting machine, characterized by comprising the feeding device according to any one of claims 1 to 9.

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